From patchwork Mon May 6 16:30:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Konovalov X-Patchwork-Id: 10931561 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 79E6C1575 for ; Mon, 6 May 2019 16:33:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 697AC286AA for ; Mon, 6 May 2019 16:33:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5D08728847; Mon, 6 May 2019 16:33:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.5 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, USER_IN_DEF_DKIM_WL autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0A066286AA for ; Mon, 6 May 2019 16:33:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726650AbfEFQbN (ORCPT ); Mon, 6 May 2019 12:31:13 -0400 Received: from mail-qt1-f202.google.com ([209.85.160.202]:55927 "EHLO mail-qt1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726561AbfEFQbL (ORCPT ); Mon, 6 May 2019 12:31:11 -0400 Received: by mail-qt1-f202.google.com with SMTP id y10so8942840qti.22 for ; Mon, 06 May 2019 09:31:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=3tB4TRcqPwl6IgCCTq3FyKBtrVczmpENbbiRumQIu5I=; b=C5Bzseg2BAkWez5di4p65TqBX8PhS2fPXqJjrcuborrGzdIMmjBkEGS1oepu/kO4gi ZrAiwZ1YbirX9TOQW6iDBsdtMTgTZyQlBla9C/k5+v0DS9Eu7yTQTxvIZJRaIMRpa57h rZkszsH1RsVjkBjXJm8Nw6zDYrexUGyc9BNsDlgeAocqmj+aaO1LdZJjYgfxEDSFYcJj gjdVUEcQ+veFKjzDustw9+BWdSodbg3cE0gzjdewRwKOf7czWg4u+rE0852iiQixBdas JIw3pQAvoPC6IfNeEfBV09Q69TtafbxIB+dc/sgJQwlLGyiy5Ze3tqDZ/eiYCNwSry9q rXvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=3tB4TRcqPwl6IgCCTq3FyKBtrVczmpENbbiRumQIu5I=; b=Kc8BiyERIz48aLb8tbABoZhIAlE1L7kJD6yZ1nJ24qpoe8B3IZr/Q0O/BKdq41CM97 cN/TB4rIbBSPazrqpDaOycqHmuqZfdto4x0IGvRSaid+IwKcAQanok1qjCEagdr86KCg fPxmRhyc6xKIgBCecIK2wcAAnQzbPtjYhsgzzo3uRmyEdX5H3XMep6RkRO1vZfv/LOGa FJ839N5WhweP+51YZIFYtqXo3GxYgpj+k/xjL2HyMV/DmhEfM7PhMcTMxtxSj7eDCw2Y mOA+Srf/p8/nWbSjKc4nAEId6U7ps9GlyR9HIz6SzeaIOmoC39Sb3Pu+wEMiufkQvxkZ J4cg== X-Gm-Message-State: APjAAAUGqWoNK3BCh4Fx1QJqxkDOIP7NJuoGI+bGsLIDx2sghWpWVKTJ Dxmrep0UxfIuRbAexzTUKXHYTegDlm+sqegQ X-Google-Smtp-Source: APXvYqwDoIRoTGaFyeue7qd81SpE5xeykRQrED4HzbPSjcVVRn6t+xvIGHOhvH8ghp1kYB1swN7rJoVGjZYp31y2 X-Received: by 2002:ac8:3390:: with SMTP id c16mr6277321qtb.315.1557160270425; Mon, 06 May 2019 09:31:10 -0700 (PDT) Date: Mon, 6 May 2019 18:30:47 +0200 In-Reply-To: Message-Id: <67ae3bd92e590d42af22ef2de0ad37b730a13837.1557160186.git.andreyknvl@google.com> Mime-Version: 1.0 References: X-Mailer: git-send-email 2.21.0.1020.gf2820cf01a-goog Subject: [PATCH v15 01/17] uaccess: add untagged_addr definition for other arches From: Andrey Konovalov To: linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org Cc: Catalin Marinas , Vincenzo Frascino , Will Deacon , Mark Rutland , Andrew Morton , Greg Kroah-Hartman , Kees Cook , Yishai Hadas , Felix Kuehling , Alexander Deucher , Christian Koenig , Mauro Carvalho Chehab , Jens Wiklander , Alex Williamson , Leon Romanovsky , Dmitry Vyukov , Kostya Serebryany , Evgeniy Stepanov , Lee Smith , Ramana Radhakrishnan , Jacob Bramley , Ruben Ayrapetyan , Robin Murphy , Luc Van Oostenryck , Dave Martin , Kevin Brodsky , Szabolcs Nagy , Andrey Konovalov Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP To allow arm64 syscalls to accept tagged pointers from userspace, we must untag them when they are passed to the kernel. Since untagging is done in generic parts of the kernel, the untagged_addr macro needs to be defined for all architectures. Define it as a noop for architectures other than arm64. Acked-by: Catalin Marinas Signed-off-by: Andrey Konovalov Reviewed-by: Khalid Aziz --- include/linux/mm.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index 6b10c21630f5..44041df804a6 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -99,6 +99,10 @@ extern int mmap_rnd_compat_bits __read_mostly; #include #include +#ifndef untagged_addr +#define untagged_addr(addr) (addr) +#endif + #ifndef __pa_symbol #define __pa_symbol(x) __pa(RELOC_HIDE((unsigned long)(x), 0)) #endif